Concept:Rearranging jumbled sentences requires identifying logical links and maintaining a coherent narrative flow.
Explanation:S1 sets the scene: the character surveys a terrace. Sentence C directly follows S1 because “that provided him as good a direction to explore as any” refers back to the terrace.
Next, sentence B gives a reason: the archers guarding the terrace must be protecting something important.
Sentence D elaborates the cautious plan to approach the Sisters of Fate.
Finally, sentence A describes the physical action (judging distances and leaping), which leads into S2 where the blades hit the stonework.
Thus the correct order is C, B, D, A.
Answer:Option 4 (CBDA)